The Costa del Mar Caballito sunglasses feature Costa del Mar’s signature mirror lens, making them perfect for the brightest light conditions by cutting glare and improving contrast. The rectangular frame is made from glossy acetate that flatters rounded faces best. Curved, comfortable frame arms wrap around medium faces for a secure, no-slip fit. <p>All Costa sunglasses come with the brand’s lightweight, scratch-, and impact-resistant 580P lens technology with 100% UV protection and polarization. </p>